We investigate thermally induced transmission variations in a 3.6-mm-thick ZnSe/MgF2 photonic band gap structure by means of a pump–probe setup, in the 600–700 nm range, under cw pump conditions. An induced temperature increase is responsible for the thermal expansion of the layers, as well as changes in the index of refraction. As a result, the band gap structure is redshifted by several nanometers. The initial transmission of the probe beam was restored following the removal of the pump laser, thus indicating the reversible nature of the process.
Thermally induced Transmission Variations in ZnSe/MgF2 Photonic Band Gap Structures / Larciprete, Maria Cristina; Sibilia, Concetta; Paoloni, S.; Leahu, Grigore; LI VOTI, Roberto; Bertolotti, Mario; Scalora, M.; Panajotov, K.. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - 92:(2002), pp. 2251-2255. [10.1063/1.1499981]
Thermally induced Transmission Variations in ZnSe/MgF2 Photonic Band Gap Structures
LARCIPRETE, Maria Cristina;SIBILIA, Concetta;LEAHU, GRIGORE;LI VOTI, Roberto;BERTOLOTTI, Mario;
2002
Abstract
We investigate thermally induced transmission variations in a 3.6-mm-thick ZnSe/MgF2 photonic band gap structure by means of a pump–probe setup, in the 600–700 nm range, under cw pump conditions. An induced temperature increase is responsible for the thermal expansion of the layers, as well as changes in the index of refraction. As a result, the band gap structure is redshifted by several nanometers. The initial transmission of the probe beam was restored following the removal of the pump laser, thus indicating the reversible nature of the process.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
